about sulphuric acid ~electrical conductivity~water

when sulphuric acid dissolves in water, almost all the hydrogen sulphate molecules ionize to give hydrogen ions and sulphate ions. the solution formed contains mainly hydrogen ions, sulphate ions and water molecules.

since water is molecules/compound in nature, so it's electrical conductivity isn't very good. but the addition of hydrogen ions and sulphate ions makes the solution contain more mobile ions. by the movement of these mobile ions, the electrical conductivity of the solution increased.

在水中,水是一種弱電解質,但H2O仍可以電離成氫離子和氫氧根離子,
所以水可以導電,
而硫酸是一種強電解質, 在水中會形成氫離子和硫酸根離子
所以硫酸能增強水的導電能力

Because sulphuric acid would release H ions when it dissolves in water. And positive charged H ions would be attracted by the cathode so that sulphuric acid could increase electrical conductivity.